-/* SCTP kernel reference Implementation
+/* SCTP kernel implementation
* (C) Copyright IBM Corp. 2001, 2004
* Copyright (c) 1999-2000 Cisco, Inc.
* Copyright (c) 1999-2001 Motorola, Inc.
* Copyright (c) 2001-2003 Intel Corp.
*
- * This file is part of the SCTP kernel reference Implementation
+ * This file is part of the SCTP kernel implementation
*
* The base lksctp header.
*
- * The SCTP reference implementation is free software;
+ * This SCTP implementation is free software;
* you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
- * The SCTP reference implementation is distributed in the hope that it
+ * This SCTP implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* and will continue to evolve.
*/
-
-
-#ifdef TEST_FRAME
-#undef CONFIG_PROC_FS
-#undef CONFIG_SCTP_DBG_OBJCNT
-#undef CONFIG_SYSCTL
-#endif /* TEST_FRAME */
-
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/in.h>
#include <linux/jiffies.h>
#include <linux/idr.h>
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
#include <net/ipv6.h>
#include <net/ip6_route.h>
#endif
* sctp/protocol.c
*/
extern struct sock *sctp_get_ctl_sock(void);
-extern void sctp_local_addr_free(struct rcu_head *head);
extern int sctp_copy_local_addr_list(struct sctp_bind_addr *,
sctp_scope_t, gfp_t gfp,
int flags);
extern struct sctp_pf *sctp_get_pf_specific(sa_family_t family);
extern int sctp_register_pf(struct sctp_pf *, sa_family_t);
+extern void sctp_addr_wq_mgmt(struct sctp_sockaddr_entry *, int);
/*
* sctp/socket.c
int sctp_backlog_rcv(struct sock *sk, struct sk_buff *skb);
int sctp_inet_listen(struct socket *sock, int backlog);
void sctp_write_space(struct sock *sk);
+void sctp_data_ready(struct sock *sk, int len);
unsigned int sctp_poll(struct file *file, struct socket *sock,
poll_table *wait);
void sctp_sock_rfree(struct sk_buff *skb);
+void sctp_copy_sock(struct sock *newsk, struct sock *sk,
+ struct sctp_association *asoc);
+extern struct percpu_counter sctp_sockets_allocated;
+extern int sctp_asconf_mgmt(struct sctp_sock *, struct sctp_sockaddr_entry *);
/*
* sctp/primitive.c
int sctp_primitive_ASCONF(struct sctp_association *, void *arg);
/*
- * sctp/crc32c.c
- */
-__u32 sctp_start_cksum(__u8 *ptr, __u16 count);
-__u32 sctp_update_cksum(__u8 *ptr, __u16 count, __u32 cksum);
-__u32 sctp_end_cksum(__u32 cksum);
-
-/*
* sctp/input.c
*/
int sctp_rcv(struct sk_buff *skb);
void sctp_eps_proc_exit(void);
int sctp_assocs_proc_init(void);
void sctp_assocs_proc_exit(void);
+int sctp_remaddr_proc_init(void);
+void sctp_remaddr_proc_exit(void);
/*
#define sctp_release_sock(sk) release_sock(sk)
#define sctp_bh_lock_sock(sk) bh_lock_sock(sk)
#define sctp_bh_unlock_sock(sk) bh_unlock_sock(sk)
-#define SCTP_SOCK_SLEEP_PRE(sk) SOCK_SLEEP_PRE(sk)
-#define SCTP_SOCK_SLEEP_POST(sk) SOCK_SLEEP_POST(sk)
/* SCTP SNMP MIB stats handlers */
DECLARE_SNMP_STAT(struct sctp_mib, sctp_statistics);
#endif /* !TEST_FRAME */
/* sctp mib definitions */
-enum
-{
+enum {
SCTP_MIB_NUM = 0,
SCTP_MIB_CURRESTAB, /* CurrEstab */
SCTP_MIB_ACTIVEESTABS, /* ActiveEstabs */
#define SCTP_MIB_MAX __SCTP_MIB_MAX
struct sctp_mib {
unsigned long mibs[SCTP_MIB_MAX];
-} __SNMP_MIB_ALIGN__;
+};
/* Print debugging messages. */
#if SCTP_DEBUG
extern int sctp_debug_flag;
-#define SCTP_DEBUG_PRINTK(whatever...) \
- ((void) (sctp_debug_flag && printk(KERN_DEBUG whatever)))
-#define SCTP_DEBUG_PRINTK_IPADDR(lead, trail, leadparm, saddr, otherparms...) \
- if (sctp_debug_flag) { \
- if (saddr->sa.sa_family == AF_INET6) { \
- printk(KERN_DEBUG \
- lead NIP6_FMT trail, \
- leadparm, \
- NIP6(saddr->v6.sin6_addr), \
- otherparms); \
- } else { \
- printk(KERN_DEBUG \
- lead NIPQUAD_FMT trail, \
- leadparm, \
- NIPQUAD(saddr->v4.sin_addr.s_addr), \
- otherparms); \
- } \
- }
+#define SCTP_DEBUG_PRINTK(fmt, args...) \
+do { \
+ if (sctp_debug_flag) \
+ printk(KERN_DEBUG pr_fmt(fmt), ##args); \
+} while (0)
+#define SCTP_DEBUG_PRINTK_CONT(fmt, args...) \
+do { \
+ if (sctp_debug_flag) \
+ pr_cont(fmt, ##args); \
+} while (0)
+#define SCTP_DEBUG_PRINTK_IPADDR(fmt_lead, fmt_trail, \
+ args_lead, addr, args_trail...) \
+do { \
+ const union sctp_addr *_addr = (addr); \
+ if (sctp_debug_flag) { \
+ if (_addr->sa.sa_family == AF_INET6) { \
+ printk(KERN_DEBUG \
+ pr_fmt(fmt_lead "%pI6" fmt_trail), \
+ args_lead, \
+ &_addr->v6.sin6_addr, \
+ args_trail); \
+ } else { \
+ printk(KERN_DEBUG \
+ pr_fmt(fmt_lead "%pI4" fmt_trail), \
+ args_lead, \
+ &_addr->v4.sin_addr.s_addr, \
+ args_trail); \
+ } \
+ } \
+} while (0)
#define SCTP_ENABLE_DEBUG { sctp_debug_flag = 1; }
#define SCTP_DISABLE_DEBUG { sctp_debug_flag = 0; }
#define SCTP_ASSERT(expr, str, func) \
if (!(expr)) { \
SCTP_DEBUG_PRINTK("Assertion Failed: %s(%s) at %s:%s:%d\n", \
- str, (#expr), __FILE__, __FUNCTION__, __LINE__); \
+ str, (#expr), __FILE__, __func__, __LINE__); \
func; \
}
#else /* SCTP_DEBUG */
#define SCTP_DEBUG_PRINTK(whatever...)
+#define SCTP_DEBUG_PRINTK_CONT(fmt, args...)
#define SCTP_DEBUG_PRINTK_IPADDR(whatever...)
#define SCTP_ENABLE_DEBUG
#define SCTP_DISABLE_DEBUG
#else
static inline void sctp_sysctl_register(void) { return; }
static inline void sctp_sysctl_unregister(void) { return; }
-static inline int sctp_sysctl_jiffies_ms(ctl_table *table, int __user *name, int nlen,
- void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen) {
- return -ENOSYS;
-}
#endif
/* Size of Supported Address Parameter for 'x' address types. */
#define SCTP_SAT_LEN(x) (sizeof(struct sctp_paramhdr) + (x) * sizeof(__u16))
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
-int sctp_v6_init(void);
-void sctp_v6_exit(void);
+void sctp_v6_pf_init(void);
+void sctp_v6_pf_exit(void);
+int sctp_v6_protosw_init(void);
+void sctp_v6_protosw_exit(void);
int sctp_v6_add_protocol(void);
void sctp_v6_del_protocol(void);
#else /* #ifdef defined(CONFIG_IPV6) */
-static inline int sctp_v6_init(void) { return 0; }
-static inline void sctp_v6_exit(void) { return; }
+static inline void sctp_v6_pf_init(void) { return; }
+static inline void sctp_v6_pf_exit(void) { return; }
+static inline int sctp_v6_protosw_init(void) { return 0; }
+static inline void sctp_v6_protosw_exit(void) { return; }
static inline int sctp_v6_add_protocol(void) { return 0; }
static inline void sctp_v6_del_protocol(void) { return; }
/* Map an association to an assoc_id. */
static inline sctp_assoc_t sctp_assoc2id(const struct sctp_association *asoc)
{
- return (asoc?asoc->assoc_id:0);
+ return asoc ? asoc->assoc_id : 0;
}
/* Look up the association by its id. */
struct sctp_association *sctp_id2assoc(struct sock *sk, sctp_assoc_t id);
+int sctp_do_peeloff(struct sock *sk, sctp_assoc_t id, struct socket **sockp);
/* A macro to walk a list of skbs. */
#define sctp_skb_for_each(pos, head, tmp) \
-for (pos = (head)->next;\
- tmp = (pos)->next, pos != ((struct sk_buff *)(head));\
- pos = tmp)
-
+ skb_queue_walk_safe(head, pos, tmp)
/* A helper to append an entire skb list (list) to another (head). */
static inline void sctp_skb_list_tail(struct sk_buff_head *list,
sctp_spin_lock_irqsave(&head->lock, flags);
sctp_spin_lock(&list->lock);
- list_splice((struct list_head *)list, (struct list_head *)head->prev);
-
- head->qlen += list->qlen;
- list->qlen = 0;
+ skb_queue_splice_tail_init(list, head);
sctp_spin_unlock(&list->lock);
sctp_spin_unlock_irqrestore(&head->lock, flags);
{
struct sctp_ulpevent *event = sctp_skb2event(skb);
+ skb_orphan(skb);
skb->sk = sk;
skb->destructor = sctp_sock_rfree;
atomic_add(event->rmem_len, &sk->sk_rmem_alloc);
/*
- * This mimics the behavior of
- * sk_stream_set_owner_r
+ * This mimics the behavior of skb_set_owner_r
*/
sk->sk_forward_alloc -= event->rmem_len;
}
/* Tests if the list has one and only one entry. */
static inline int sctp_list_single_entry(struct list_head *head)
{
- return ((head->next != head) && (head->next == head->prev));
+ return (head->next != head) && (head->next == head->prev);
}
/* Generate a random jitter in the range of -50% ~ +50% of input RTO. */
}
/* Break down data chunks at this point. */
-static inline int sctp_frag_point(const struct sctp_sock *sp, int pmtu)
+static inline int sctp_frag_point(const struct sctp_association *asoc, int pmtu)
{
+ struct sctp_sock *sp = sctp_sk(asoc->base.sk);
int frag = pmtu;
frag -= sp->pf->af->net_header_len;
frag -= sizeof(struct sctphdr) + sizeof(struct sctp_data_chunk);
- if (sp->user_frag)
- frag = min_t(int, frag, sp->user_frag);
+ if (asoc->user_frag)
+ frag = min_t(int, frag, asoc->user_frag);
frag = min_t(int, frag, SCTP_MAX_CHUNK_LEN);
#define _sctp_walk_params(pos, chunk, end, member)\
for (pos.v = chunk->member;\
- pos.v <= (void *)chunk + end - sizeof(sctp_paramhdr_t) &&\
pos.v <= (void *)chunk + end - ntohs(pos.p->length) &&\
ntohs(pos.p->length) >= sizeof(sctp_paramhdr_t);\
pos.v += WORD_ROUND(ntohs(pos.p->length)))
#define _sctp_walk_errors(err, chunk_hdr, end)\
for (err = (sctp_errhdr_t *)((void *)chunk_hdr + \
sizeof(sctp_chunkhdr_t));\
- (void *)err <= (void *)chunk_hdr + end - sizeof(sctp_errhdr_t) &&\
(void *)err <= (void *)chunk_hdr + end - ntohs(err->length) &&\
ntohs(err->length) >= sizeof(sctp_errhdr_t); \
err = (sctp_errhdr_t *)((void *)err + WORD_ROUND(ntohs(err->length))))
#define WORD_ROUND(s) (((s)+3)&~3)
/* Make a new instance of type. */
-#define t_new(type, flags) (type *)kmalloc(sizeof(type), flags)
+#define t_new(type, flags) (type *)kzalloc(sizeof(type), flags)
/* Compare two timevals. */
#define tv_lt(s, t) \
return AF_INET6;
default:
return 0;
- };
+ }
}
/* Convert from an address parameter type to an address family. */
return AF_INET6;
default:
return 0;
- };
+ }
}
/* Perform some sanity checks. */
/* This is the hash function for the SCTP port hash table. */
static inline int sctp_phashfn(__u16 lport)
{
- return (lport & (sctp_port_hashsize - 1));
+ return lport & (sctp_port_hashsize - 1);
}
/* This is the hash function for the endpoint hash table. */
static inline int sctp_ep_hashfn(__u16 lport)
{
- return (lport & (sctp_ep_hashsize - 1));
+ return lport & (sctp_ep_hashsize - 1);
}
/* This is the hash function for the association hash table. */
{
int h = (lport << 16) + rport;
h ^= h>>8;
- return (h & (sctp_assoc_hashsize - 1));
+ return h & (sctp_assoc_hashsize - 1);
}
/* This is the hash function for the association hash table. This is
{
int h = (lport << 16) + rport;
h ^= vtag;
- return (h & (sctp_assoc_hashsize-1));
+ return h & (sctp_assoc_hashsize - 1);
}
#define sctp_for_each_hentry(epb, node, head) \
addr->v6.sin6_addr.s6_addr32[2] = htonl(0x0000ffff);
}
+/* The cookie is always 0 since this is how it's used in the
+ * pmtu code.
+ */
+static inline struct dst_entry *sctp_transport_dst_check(struct sctp_transport *t)
+{
+ if (t->dst && !dst_check(t->dst, 0)) {
+ dst_release(t->dst);
+ t->dst = NULL;
+ }
+
+ return t->dst;
+}
+
#endif /* __net_sctp_h__ */
projects / linux-flexiantxendom0-3.2.10.git / blobdiff